I am getting an account error -9 which prevents me from using marketplace and stuff. I've changed my gamertag recently, not sure if that is the cause. The new gamertag does not have any illegal characters.
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Thank you for your report!
We're actually already tracking this issue at MCPE-62421, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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